BGS mineralogy and petrology collection record

Sample number E67104; COLLNOWPREE6;
Sample Donor Pratt, W.
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Craig Caw Formation. Vitroclast. tuff
Locality details 290 m at 318 deg from 403 in Spot Light Nr. Crig y Llan
50k map sheet Barmouth (149)

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Map reference SH 7577 1368
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E67104

Cross Polarized, E67104

Plane Polarized, E67104

Plane Polarized, E67104